(anthropology) A member of the racial classification of humanity composed of peoples native to North Asia, East Asia, Pacific Oceania, and Greenland, as well as their diaspora in other parts of the world.

Both American Indians and Mongoloids have shovel-shaped incisor teeth and, at birth, display the Mongoloid spot — a blue spot above the rump, which fades within a short time; many also have the Mongoloid, or epicanthic, fold of the inner part of the upper eyelid.

1991, Floyd James Davis, Who is Black?: One Nation's Definition, page 19,

On the average, he found caucasoids to have the longest heads and mongoloids the roundest; mongoloids the straightest hair and negroids the most tightly curled; caucasoids the narrowest noses and negroids the broadest.

The operation made each feature, itself, look O.K., but her overall looks are still those of a Mongoloid. Her facial expression immediately reveals that she is different. She still has that peculiar look. You can see she has Down's syndrome.

(offensive) Idiot, retard; a general term of abuse, due to association with Down syndrome.